a. Suppose that an instructor decides to add five points to every student’s exam score in a class. What effect would this have on the mean exam score for the class? On the  median exam score? What effect would this have on the standard deviation of exam scores? Explain.
b. Suppose that an instructor decides to add five points only to the exam score for the highest scoring student in the class. What effect would this have on the mean exam score for the class? On the median exam score? What effect would this have on the standard deviation of exam scores? Explain.
c. Suppose that an instructor decides to add five points only to the exam score for the lowest scoring student in the class. What effect would this have on the mean exam score for the class? On the median exam score? What effect would this have on the standard deviation of exam scores? Explain.